Improvements in this release of the installer

Support for CD/DVD sets is back

Support for loading additional CDs or DVDs from a set (a feature
missing in Etch) has been added again. As language-related packages do
not all fit on the first CD, this greatly improves the situation for
non-English speakers performing installations without internet
connectivity.

Clock synchronization using NTP

By default, the installer will now attempt to synchronize the system
clock using the Network Time Protocol (NTP) when a network connection
has been configured. The hardware clock will be updated before the
system is rebooted.

This ensures a valid system time during installation, preventing odd
behaviors with cryptographic signatures or filesystem checks.

Support for volatile has been added

The installer now supports adding the volatile.debian.org repository
when adding additional APT sources. In the same way as
security.debian.org, it will be configured by default when the
stable distribution is installed.

In addition, it is now possible to disable the security and volatile
sources when the installer is run in expert mode and
security.debian.org will be configured by default for installations of
testing.

Starting the installer from Microsoft Windows

Since the integration of the win32-loader package, it is now possible to start the installer
directly from Microsoft Windows without the need to change BIOS
settings. Upon insertion of a CD-ROM, DVD-ROM or USB stick, an autorun
program will be started, offering a step-by-step process to start the
Debian Installer. A few installer settings (including language) will
be preconfigured from this process.

Experimental support for Serial ATA RAID (dmraid)

As previously announced, the Debian Installer now includes
experimental support for installing Debian on systems with Serial ATA
RAID as supported in Linux via the dmraid utility. Please see the dedicated wiki
page for more information.

Other noteworthy changes

The installer has been updated to use Linux 2.6.22

Various changes have resulted in reduced memory usage

Rescue mode now supports LUKS encrypted partitions

Various code cleanups, reorganizations and refactorings have been done

A new language, Amharic, has been added (graphical installations only)

No longer supported

DECstation (mipsel) and RiscPC (arm) machines are no longer supported

The sparc32 architecture is no longer supported as kernel support for it
was dropped.

Known issues in this release

Support for the relatime mount option has been added, but is currently broken.
See #460824

The Debian Installer team is still looking for active contributors for
new features, bug triaging and squashing, improvements on the manual
and the developer documentation. If you want Lenny to release on time,
please join and help!

Installation CDs, other media, and everything else you'll need are
available from our web site.